81964-01-4

Upstream product

• 55739-58-7 (R_P,R_P)-1,2-bis[(o-anisyl)(phenyl)phosphino]ethane 
• 131830-91-6 (R_P,R_P)-1,2-bis[(o-anisyl)(phenyl)phosphino-P-borane]ethane 
• 1316041-04-9 (R_P,R_P)-1,2-bis[(o-hydroxyphenyl)(phenyl)phosphino-P-borane]ethane 

Downstream Products

• 1316041-04-9 (R_P,R_P)-1,2-bis[(o-hydroxyphenyl)(phenyl)phosphino-P-borane]ethane 
• 1233360-87-6 (R(P),R(P))-1,2-bis{[2-(cyclohexenyl-3-oxy)phenyl](phenyl)phosphino-P-borane}ethane 
• 1233360-91-2 (R(P),R(P))-1,2-bis[2-(cyclohexyloxyphenyl)(phenyl)phosphino-P-borane]ethane 
• 917029-48-2 (R_P,R_P)-1,2-bis[(2-acetoxyphenyl)(phenyl)phosphino-P-borane]ethane 
• 917029-47-1 (R_P,R_P)-1,2-bis[(phenyl)(2-pivaloyloxyphenyl)phosphino-P-borane]ethane 
• 1316041-16-3 (R_P,R_P)-1,2-bis[(2-benzoyloxyphenyl)(phenyl)phosphino-P-borane]ethane 
• 1316041-18-5 (R_P,R_P)-1,2-bis{(phenyl)[2-(p-tosyloxy)phenyl]phosphino-P-borane}ethane 
• 1316041-22-1 (R_P,R_P)-1,2-bis[(2-ethoxyphenyl)(phenyl)phosphino]ethane 
• 1316041-25-4 (R_P,R_P)-1,2-bis{[2-(9-anthrylmethoxy)phenyl](phenyl)phosphino}ethane 
• 917029-75-5 (R_P,R_P)-1,2-bis{[2-(2-methoxyethoxy)phenyl](phenyl)phosphino}ethane 
• 917029-74-4 (R_P,R_P)-1,2-bis{[2-(tert-butoxycarbonylmethoxy)phenyl](phenyl)phosphino}ethane 
• 1316041-28-7 (R_P,R_P)-1,2-bis{[2-(N-tert-butylcarbamoylmethoxy)phenyl](phenyl)phosphino}ethane 
• 917029-71-1 (R_P,R_P)-1,2-bis[(phenyl)(2-triisopropylsiloxyphenyl)phosphino]ethane 
• 81964-02-5 (R_P,R_P)-1,2-bis[(2-acetoxyphenyl)(phenyl)phosphino]ethane 

Relevant academic research and scientific papers

A survey of pendant donor-functionalised (N,O) phosphine ligands for Cr-catalysed ethylene tri- and tetramerisation

In this study three classes of ligands are explored for ethylene tri-/tetramerisation in conjunction with chromium and both triethylaluminium (AlEt3) and methylaluminoxane (MAO) co-catalysts. Hydrazine based ligands containing an N-H functionality [PN(NH)P], analogous to Rosenthal's previously reported PNPNH system, show selectivity towards 1-hexene and 1-octene formation in conjunction with AlEt3, and act as PNP tetramerisation analogues when MAO is employed. PNP ligands containing non-protic pendant donor moieties generally show poor activity and selectivity when AlEt3 is employed as an activator, however when MAO is used good activities and selectivities are achieved. n-Propylcyclopentane and 2-propenylcyclopentane, and higher homologues, are produced during catalysis when oxygen is the donor atom. The formation of such products is discussed with respect to the generation of methylenecyclopentane and methylcyclopentane by PNP based tetramerisation catalysts. Simple phosphine ligands containing O-H functionalisation are also explored and it was shown that the catalyst selectivity is highly dependent on both the activator and structural features of the ligand employed.

Profiling the tuneable R-SMS-Phos structure in the rhodium(i)-catalyzed hydrogenation of olefins: The last stand?

A diversified family of enantiopure P-stereogenic "R-SMS-Phos" {R-SMS-Phos = 1,2-bis[(o-RO-phenyl)(phenyl)phosphino]ethane} ligands wherein R = branched or heteroatom-substituted alkyl, aralkyl, silyl, acyl, sulfonyl, etc. was screened for the Rh(i)-catalyzed hydrogenation of a representative set of olefinic substrates. This systematic and detailed investigation revealed a marked beneficial impact on enantioselectivity and catalyst activity in comparison to Knowles' ultimate DiPAMP {DiPAMP = 1,2-bis[(o-anisyl)(phenyl) phosphino]ethane} design. Mutant ligands with highly enhanced properties possessing particular features wherein the DiPAMP structure is found embedded were identified. The Royal Society of Chemistry 2011.

NEW ORTHO-FUNCTIONALIZED P-CHIRAL ARYLPHOSPHINES AND DERIVATIVES: THEIR PREPARATION AND USE IN ASYMMETRIC CATALYSIS

The invention relates to novel organo phosphorus P-chiral optically active compounds of formula (I) having a hydroxyl, mercapto, amino, carboxyl, sulfonyl group on aryl near a phosphorus atom, to the preparation and the use thereof in then asymmetrical catalysis of unsaturated compounds. Novel acylphosphine optically pure ligands embodied in the form of transition metal complexes exhibit an increased activity and enantloselectivity, in particular in asymmetrical hydrogenation, in comparison with the same type Uganda such as DiPAMP.